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ONE Primary Rim Seal

Spring-Loaded, Full-Contact Primary Rim Seal

ONE  rim seal for all types of floating roof rim configurations

All ONE  Primary Rim Seals are in full contact with the tank shell throughout the entire working range. Present and future tank shell irregularities, as well as the tank's out-of-roundness will be compensated. Reliability and emission reduction are the top performance features of the ONE primary rim seal.


Key Performance Features

  • Maintenance free operation.

  • Working range of R(-X/+3X) per EEMUA Publication 159.

  • Tailored X-values for the required working range to accommodate any tank out-of-roundness.

  • The gas-tight condition of the primary membrane can be tested after installation and during tank operation (if the floating roof is accessible).

  • Installation options for all existing roof rim configurations (no hot-work).

  • Combining the ONE primary and ONE secondary seal allows to comply with the most stringent emissions regulations (separate emission calculations required).

  • Seal material selection based on the chemical environment of the application.

  • Flame retardant materials in compliance with DIN 22100 / 22118.

  • All selected materials are conductive (TRBS 2153).

  • Excellent ROI (Return On Investment) due to the lifetime of 20 years and more.

  • Turnkey installation service available from our experienced and qualified field service team.

  • Short installation time.

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